aerostat

noun

aero·​stat ˈer-ō-ˌstat How to pronounce aerostat (audio)
: a lighter-than-air aircraft (such as a balloon or blimp) compare aerodyne

Examples of aerostat in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The future, chock-full of super-stealth warplanes, blinding-fast missiles and network-crippling hacks, will also feature aerostats — specialty blimps, for the uninitiated. Colin Demarest, Axios, 9 Apr. 2025 China’s use of aerostats — which include free-floating balloons like the one found hovering over the United States, steerable balloons or airships, and tethered balloons — to observe its own people offers clues to the scope and ambition of a program shrouded in secrecy. Lily Kuo, Washington Post, 16 Feb. 2023 Flying continuously inside the Earth’s atmosphere requires lift though: either the buoyancy of a lighter-than-air craft such as a balloon, airship or aerostat provided by hot air or low-density gas, or lift from airflow generated by a heavier than air craft. David Hambling, Forbes, 13 Feb. 2023 The signal from an aerostat -- used as a low altitude platform station (LAPS) -- is sufficient for tasks like internet browsing and email, says World Mobile. Tom Page, CNN, 12 Jan. 2022 An aerostat is a giant surveillance balloon. Annie Jacobsen, Wired, 20 Jan. 2021 Conventional aerostats require a sizable ground crew, upwards of 10 or more people, to operate the tethers and winches needed to send the aerostat up to the necessary altitude and bring it back down. Tracy Staedter, IEEE Spectrum, 4 Apr. 2018

Word History

Etymology

borrowed from French aérostat, probably back-formation from aérostatique "of aerostatics," with -stat (after héliostat heliostat) taken as the Greek agentive element -statēs "one who causes to stand" — more at -stat

First Known Use

1784, in the meaning defined above

Time Traveler
The first known use of aerostat was in 1784

Browse Nearby Words

Cite this Entry

“Aerostat.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aerostat. Accessed 6 May. 2026.

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